Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
To:     <linux-kernel@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
        <linux-nvdimm@lists.01.org>, <linux-mm@kvack.org>,
        <linux-fsdevel@vger.kernel.org>, <dm-devel@redhat.com>
CC:     <darrick.wong@oracle.com>, <dan.j.williams@intel.com>,
        <david@fromorbit.com>, <hch@lst.de>, <agk@redhat.com>,
        <snitzer@redhat.com>, <rgoldwyn@suse.de>, <qi.fuli@fujitsu.com>,
        <y-goto@fujitsu.com>
Subject: [PATCH RESEND v2 03/10] fs: Introduce ->corrupted_range() for superblock
Date:   Fri, 29 Jan 2021 14:27:50 +0800
Message-ID: <20210129062757.1594130-4-ruansy.fnst@cn.fujitsu.com>
In-Reply-To: <20210129062757.1594130-1-ruansy.fnst@cn.fujitsu.com>
References: <20210129062757.1594130-1-ruansy.fnst@cn.fujitsu.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

Memory failure occurs in fsdax mode will finally be handled in
filesystem.  We introduce this interface to find out files or metadata
affected by the corrupted range, and try to recover the corrupted data
if possiable.

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
 include/linux/fs.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index fd47deea7c17..4cc9ff9caa87 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1963,6 +1963,8 @@ struct super_operations {
 				  struct shrink_control *);
 	long (*free_cached_objects)(struct super_block *,
 				    struct shrink_control *);
+	int (*corrupted_range)(struct super_block *sb, struct block_device *bdev,
+			       loff_t offset, size_t len, void *data);
 };
 
 /*
-- 
2.30.0